Reworked the process code.
This commit is contained in:
parent
7bd07d62f3
commit
72af6e5349
2
TODO
2
TODO
@ -4,5 +4,3 @@
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* Allow to use GTK's main loop instead of the select stuff in
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wait.c
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* need to close a lot of handles in w32-io.c
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@ -13,7 +13,7 @@ AM_MAINTAINER_MODE
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# AGE, set REVISION to 0.
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# 3. Interfaces removed (BAD, breaks upward compatibility): Increment
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# CURRENT, set AGE and REVISION to 0.
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AM_INIT_AUTOMAKE(gpgme,0.1.4a)
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AM_INIT_AUTOMAKE(gpgme,0.1.4b)
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LIBGPGME_LT_CURRENT=2
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LIBGPGME_LT_AGE=2
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LIBGPGME_LT_REVISION=0
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@ -1,5 +1,21 @@
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2001-02-20 Werner Koch <wk@gnupg.org>
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* w32-io.c (destroy_reader,kill_reader): New.
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(create_reader, reader): Add a new event to stop the thread.
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(_gpgme_io_close): Kill the reader thread.
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* posix-io.c (_gpgme_io_select): Handle frozen fds here.
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* 32-io.c (_gpgme_io_select): Ditto. Removed a bunch of unused code.
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* wait.c: Reworked the whole thing.
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* rungpg.c (_gpgme_gpg_new): Init pid to -1.
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(_gpgme_gpg_release): Remove the process from the wait queue.
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2001-02-19 Werner Koch <wk@gnupg.org>
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* w32-io.c (_gpgme_io_set_close_notify): New.
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(_gpgme_io_close): Do the notification.
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* posix-io.c (_gpgme_io_select): Use a 1 sec timeout and not 200
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microseconds.
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@ -43,7 +43,7 @@ extern "C" {
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* let autoconf (using the AM_PATH_GPGME macro) check that this
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* header matches the installed library.
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* Warning: Do not edit the next line. configure will do that for you! */
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#define GPGME_VERSION "0.1.4a"
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#define GPGME_VERSION "0.1.4b"
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@ -267,7 +267,10 @@ _gpgme_io_select ( struct io_select_fd_s *fds, size_t nfds )
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for ( i=0; i < nfds; i++ ) {
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if ( fds[i].fd == -1 )
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continue;
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if ( fds[i].for_read ) {
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if ( fds[i].frozen ) {
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DEBUG_ADD1 (dbg_help, "f%d ", fds[i].fd );
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}
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else if ( fds[i].for_read ) {
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assert ( !FD_ISSET ( fds[i].fd, &readfds ) );
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FD_SET ( fds[i].fd, &readfds );
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if ( fds[i].fd > max_fd )
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@ -197,6 +197,8 @@ _gpgme_gpg_new ( GpgObject *r_gpg )
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gpg->colon.fd[1] = -1;
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gpg->cmd.fd = -1;
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gpg->pid = -1;
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/* allocate the read buffer for the status pipe */
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gpg->status.bufsize = 1024;
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gpg->status.readpos = 0;
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@ -250,6 +252,8 @@ _gpgme_gpg_release ( GpgObject gpg )
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free_argv (gpg->argv);
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xfree (gpg->cmd.keyword);
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if (gpg->pid != -1)
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_gpgme_remove_proc_from_wait_queue ( gpg->pid );
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if (gpg->status.fd[0] != -1 )
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_gpgme_io_close (gpg->status.fd[0]);
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if (gpg->status.fd[1] != -1 )
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229
gpgme/w32-io.c
229
gpgme/w32-io.c
@ -52,11 +52,21 @@
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#define READBUF_SIZE 4096
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static struct {
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int inuse;
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int fd;
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void (*handler)(int,void*);
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void *value;
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} notify_table[256];
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DEFINE_STATIC_LOCK (notify_table_lock);
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struct reader_context_s {
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HANDLE file_hd;
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HANDLE thread_hd;
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DECLARE_LOCK (mutex);
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int stop_me;
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int eof;
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int eof_shortcut;
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int error;
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@ -64,6 +74,7 @@ struct reader_context_s {
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HANDLE have_data_ev; /* manually reset */
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HANDLE have_space_ev; /* auto reset */
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HANDLE stopped;
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size_t readpos, writepos;
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char buffer[READBUF_SIZE];
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};
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@ -109,7 +120,7 @@ reader (void *arg)
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DEBUG2 ("reader thread %p for file %p started", c->thread_hd, c->file_hd );
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for (;;) {
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LOCK (c->mutex);
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/* leave a one byte gap so that we can see wheter it is empty or full*/
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/* leave a 1 byte gap so that we can see whether it is empty or full*/
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if ((c->writepos + 1) % READBUF_SIZE == c->readpos) {
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/* wait for space */
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if (!ResetEvent (c->have_space_ev) )
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@ -120,6 +131,10 @@ reader (void *arg)
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DEBUG1 ("reader thread %p: got space", c->thread_hd );
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LOCK (c->mutex);
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}
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if ( c->stop_me ) {
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UNLOCK (c->mutex);
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break;
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}
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nbytes = (c->readpos + READBUF_SIZE - c->writepos-1) % READBUF_SIZE;
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if ( nbytes > READBUF_SIZE - c->writepos )
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nbytes = READBUF_SIZE - c->writepos;
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@ -149,6 +164,10 @@ reader (void *arg)
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DEBUG2 ("reader thread %p: got %d bytes", c->thread_hd, (int)nread );
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LOCK (c->mutex);
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if (c->stop_me) {
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UNLOCK (c->mutex);
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break;
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}
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c->writepos = (c->writepos + nread) % READBUF_SIZE;
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if ( !SetEvent (c->have_data_ev) )
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DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
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@ -158,6 +177,7 @@ reader (void *arg)
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if ( !SetEvent (c->have_data_ev) )
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DEBUG1 ("SetEvent failed: ec=%d", (int)GetLastError ());
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DEBUG1 ("reader thread %p ended", c->thread_hd );
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SetEvent (c->stopped);
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return 0;
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}
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@ -182,12 +202,15 @@ create_reader (HANDLE fd)
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c->file_hd = fd;
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c->have_data_ev = CreateEvent (&sec_attr, TRUE, FALSE, NULL);
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c->have_space_ev = CreateEvent (&sec_attr, FALSE, TRUE, NULL);
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if (!c->have_data_ev || !c->have_space_ev) {
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c->stopped = CreateEvent (&sec_attr, TRUE, FALSE, NULL);
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if (!c->have_data_ev || !c->have_space_ev || !c->stopped ) {
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DEBUG1 ("** CreateEvent failed: ec=%d\n", (int)GetLastError ());
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if (c->have_data_ev)
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CloseHandle (c->have_data_ev);
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if (c->have_space_ev)
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CloseHandle (c->have_space_ev);
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if (c->stopped)
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CloseHandle (c->stopped);
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xfree (c);
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return NULL;
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}
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@ -204,6 +227,8 @@ create_reader (HANDLE fd)
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CloseHandle (c->have_data_ev);
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if (c->have_space_ev)
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CloseHandle (c->have_space_ev);
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if (c->stopped)
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CloseHandle (c->stopped);
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xfree (c);
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return NULL;
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}
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@ -211,6 +236,27 @@ create_reader (HANDLE fd)
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return c;
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}
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static void
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destroy_reader (struct reader_context_s *c)
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{
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if (c->have_space_ev)
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SetEvent (c->have_space_ev);
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DEBUG1 ("waiting for thread %p termination ...", c->thread_hd );
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WaitForSingleObject (c->stopped, INFINITE);
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DEBUG1 ("thread %p has terminated", c->thread_hd );
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if (c->stopped)
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CloseHandle (c->stopped);
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if (c->have_data_ev)
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CloseHandle (c->have_data_ev);
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if (c->have_space_ev)
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CloseHandle (c->have_space_ev);
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CloseHandle (c->thread_hd);
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DESTROY_LOCK (c->mutex);
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xfree (c);
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}
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/*
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* Find a reader context or create a new one
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@ -243,6 +289,24 @@ find_reader (int fd, int start_it)
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}
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static void
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kill_reader (int fd)
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{
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int i;
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LOCK (reader_table_lock);
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for (i=0; i < reader_table_size; i++ ) {
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if (reader_table[i].used && reader_table[i].fd == fd ) {
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destroy_reader (reader_table[i].context);
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reader_table[i].context = NULL;
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reader_table[i].used = 0;
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break;
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}
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}
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UNLOCK (reader_table_lock);
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}
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int
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_gpgme_io_read ( int fd, void *buffer, size_t count )
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@ -375,11 +439,29 @@ _gpgme_io_pipe ( int filedes[2], int inherit_idx )
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int
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_gpgme_io_close ( int fd )
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{
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int i;
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void (*handler)(int, void*) = NULL;
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void *value = NULL;
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if ( fd == -1 )
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return -1;
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DEBUG1 ("** closing handle for fd %d\n", fd);
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/* fixme: destroy thread */
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kill_reader (fd);
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LOCK (notify_table_lock);
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for ( i=0; i < DIM (notify_table); i++ ) {
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if (notify_table[i].inuse && notify_table[i].fd == fd) {
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handler = notify_table[i].handler;
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value = notify_table[i].value;
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notify_table[i].handler = NULL;
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notify_table[i].value = NULL;
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notify_table[i].inuse = 0;
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break;
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}
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}
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UNLOCK (notify_table_lock);
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if (handler)
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handler (fd, value);
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if ( !CloseHandle (fd_to_handle (fd)) ) {
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DEBUG2 ("CloseHandle for fd %d failed: ec=%d\n",
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@ -390,6 +472,37 @@ _gpgme_io_close ( int fd )
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return 0;
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}
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int
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_gpgme_io_set_close_notify (int fd, void (*handler)(int, void*), void *value)
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{
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int i;
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assert (fd != -1);
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LOCK (notify_table_lock);
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for (i=0; i < DIM (notify_table); i++ ) {
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if ( notify_table[i].inuse && notify_table[i].fd == fd )
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break;
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}
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if ( i == DIM (notify_table) ) {
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for (i=0; i < DIM (notify_table); i++ ) {
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if ( !notify_table[i].inuse )
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break;
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}
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}
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if ( i == DIM (notify_table) ) {
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UNLOCK (notify_table_lock);
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return -1;
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}
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notify_table[i].fd = fd;
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notify_table[i].handler = handler;
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notify_table[i].value = value;
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notify_table[i].inuse = 1;
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UNLOCK (notify_table_lock);
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DEBUG2 ("set notification for fd %d (idx=%d)", fd, i );
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return 0;
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}
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int
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_gpgme_io_set_nonblocking ( int fd )
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@ -563,7 +676,8 @@ int
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_gpgme_io_waitpid ( int pid, int hang, int *r_status, int *r_signal )
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{
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HANDLE proc = fd_to_handle (pid);
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int code, exc, ret = 0;
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int code, ret = 0;
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DWORD exc;
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*r_status = 0;
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*r_signal = 0;
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@ -619,7 +733,6 @@ _gpgme_io_kill ( int pid, int hard )
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int
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_gpgme_io_select ( struct io_select_fd_s *fds, size_t nfds )
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{
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#if 1
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HANDLE waitbuf[MAXIMUM_WAIT_OBJECTS];
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int waitidx[MAXIMUM_WAIT_OBJECTS];
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int code, nwait;
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@ -631,11 +744,16 @@ _gpgme_io_select ( struct io_select_fd_s *fds, size_t nfds )
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DEBUG_BEGIN (dbg_help, "select on [ ");
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any = any_write = 0;
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nwait = 0;
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count = 0;
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for ( i=0; i < nfds; i++ ) {
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if ( fds[i].fd == -1 )
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continue;
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fds[i].signaled = 0;
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if ( fds[i].for_read || fds[i].for_write ) {
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if ( fds[i].for_read ) {
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if ( fds[i].frozen ) {
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DEBUG_ADD1 (dbg_help, "f%d ", fds[i].fd );
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}
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else if ( fds[i].for_read ) {
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struct reader_context_s *c = find_reader (fds[i].fd,1);
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if (!c) {
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@ -650,28 +768,24 @@ _gpgme_io_select ( struct io_select_fd_s *fds, size_t nfds )
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waitidx[nwait] = i;
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waitbuf[nwait++] = c->have_data_ev;
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}
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DEBUG_ADD1 (dbg_help, "r%d ", fds[i].fd );
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any = 1;
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}
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else if ( fds[i].for_write ) {
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DEBUG_ADD1 (dbg_help, "w%d ", fds[i].fd );
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any = 1;
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/* no way to see whether a handle is ready for writing,
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* so we signal them all */
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fds[i].signaled = 1;
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any_write =1;
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count++;
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}
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DEBUG_ADD2 (dbg_help, "%c%d ",
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fds[i].for_read? 'r':'w',fds[i].fd );
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any = 1;
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}
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fds[i].signaled = 0;
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}
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DEBUG_END (dbg_help, "]");
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if (!any)
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return 0;
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count = 0;
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/* no way to see whether a handle is ready for writing, signal all */
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for ( i=0; i < nfds; i++ ) {
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if ( fds[i].fd == -1 )
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continue;
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if ( fds[i].for_write ) {
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fds[i].signaled = 1;
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any_write =1;
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count++;
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}
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}
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code = WaitForMultipleObjects ( nwait, waitbuf, 0, any_write? 200:1000);
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if ( code >= WAIT_OBJECT_0 && code < WAIT_OBJECT_0 + nwait ) {
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/* This WFMO is a really silly function: It does return either
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@ -735,79 +849,6 @@ _gpgme_io_select ( struct io_select_fd_s *fds, size_t nfds )
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}
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return count;
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#else /* This is the code we use */
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int i, any, count;
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int once_more = 0;
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DEBUG_SELECT ((stderr, "gpgme:fakedselect on [ "));
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any = 0;
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for ( i=0; i < nfds; i++ ) {
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if ( fds[i].fd == -1 )
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continue;
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if ( fds[i].for_read || fds[i].for_write ) {
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DEBUG_SELECT ((stderr, "%c%d ",
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fds[i].for_read? 'r':'w',fds[i].fd ));
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any = 1;
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}
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fds[i].signaled = 0;
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}
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DEBUG_SELECT ((stderr, "]\n" ));
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if (!any)
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return 0;
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restart:
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count = 0;
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/* no way to see whether a handle is ready fro writing, signal all */
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for ( i=0; i < nfds; i++ ) {
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if ( fds[i].fd == -1 )
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continue;
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if ( fds[i].for_write ) {
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fds[i].signaled = 1;
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count++;
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}
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}
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/* now peek on all read handles */
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for ( i=0; i < nfds; i++ ) {
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if ( fds[i].fd == -1 )
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continue;
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if ( fds[i].for_read ) {
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int navail;
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if ( !PeekNamedPipe (fd_to_handle (fds[i].fd),
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NULL, 0, NULL, &navail, NULL) ) {
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DEBUG1 ("select: PeekFile failed: ec=%d\n",
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(int)GetLastError ());
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}
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else if ( navail ) {
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DEBUG2 ("fd %d has %d bytes to read\n", fds[i].fd, navail );
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fds[i].signaled = 1;
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count++;
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}
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}
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}
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if ( !once_more && !count ) {
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/* once more but after relinquishing our timeslot */
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once_more = 1;
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Sleep (0);
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goto restart;
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}
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if ( count ) {
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DEBUG_SELECT ((stderr, "gpgme: signaled [ "));
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for ( i=0; i < nfds; i++ ) {
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if ( fds[i].fd == -1 )
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continue;
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if ( (fds[i].for_read || fds[i].for_write) && fds[i].signaled ) {
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DEBUG_SELECT ((stderr, "%c%d ",
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fds[i].for_read? 'r':'w',fds[i].fd ));
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}
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}
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DEBUG_SELECT ((stderr, "]\n" ));
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}
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return count;
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#endif
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}
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#endif /*HAVE_DOSISH_SYSTEM*/
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|
224
gpgme/wait.c
224
gpgme/wait.c
@ -31,85 +31,105 @@
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#include "context.h"
|
||||
#include "ops.h"
|
||||
#include "wait.h"
|
||||
#include "sema.h"
|
||||
#include "io.h"
|
||||
|
||||
/* Fixme: implement the following stuff to make the code MT safe.
|
||||
* To avoid the need to link against a specific threads lib, such
|
||||
* an implementation should require the caller to register a function
|
||||
* which does this task.
|
||||
* enter_crit() and leave_crit() are used to embrace an area of code
|
||||
* which should be executed only by one thread at a time.
|
||||
* lock_xxxx() and unlock_xxxx() protect access to an data object.
|
||||
* */
|
||||
#define enter_crit() do { } while (0)
|
||||
#define leave_crit() do { } while (0)
|
||||
#define lock_table() do { } while (0)
|
||||
#define unlock_table() do { } while (0)
|
||||
struct wait_item_s;
|
||||
struct proc_s;
|
||||
|
||||
|
||||
struct wait_item_s {
|
||||
volatile int active;
|
||||
int (*handler)(void*,int,int);
|
||||
void *handler_value;
|
||||
int pid;
|
||||
int inbound; /* this is an inbound data handler fd */
|
||||
GpgmeCtx ctx;
|
||||
};
|
||||
static struct proc_s *proc_queue;
|
||||
DEFINE_STATIC_LOCK (proc_queue_lock);
|
||||
|
||||
static int fd_table_size;
|
||||
static struct io_select_fd_s *fd_table;
|
||||
DEFINE_STATIC_LOCK (fd_table_lock);
|
||||
|
||||
static void (*idle_function) (void);
|
||||
|
||||
|
||||
struct proc_s {
|
||||
struct proc_s *next;
|
||||
int pid;
|
||||
GpgmeCtx ctx;
|
||||
struct wait_item_s *handler_list;
|
||||
int ready;
|
||||
};
|
||||
|
||||
struct wait_item_s {
|
||||
struct wait_item_s *next;
|
||||
int (*handler)(void*,int,int);
|
||||
void *handler_value;
|
||||
int inbound; /* this is an inbound data handler fd */
|
||||
struct proc_s *proc; /* backlink */
|
||||
int ready;
|
||||
int frozen; /* copy of the frozen flag from the fd_table */
|
||||
};
|
||||
|
||||
|
||||
|
||||
static int do_select ( void );
|
||||
static void run_idle (void);
|
||||
|
||||
|
||||
static struct wait_item_s *
|
||||
queue_item_from_context ( GpgmeCtx ctx )
|
||||
{
|
||||
struct wait_item_s *q;
|
||||
int i;
|
||||
|
||||
for (i=0; i < fd_table_size; i++ ) {
|
||||
if ( fd_table[i].fd != -1 && (q=fd_table[i].opaque) && q->ctx == ctx )
|
||||
return q;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/* only to be called with a locked proc_queue */
|
||||
static int
|
||||
count_active_and_thawed_fds ( int pid )
|
||||
count_running_fds ( struct proc_s *proc )
|
||||
{
|
||||
struct wait_item_s *q;
|
||||
int i, count = 0;
|
||||
int count = 0;
|
||||
|
||||
for (i=0; i < fd_table_size; i++ ) {
|
||||
if ( fd_table[i].fd != -1 && (q=fd_table[i].opaque)
|
||||
&& q->active && !fd_table[i].frozen && q->pid == pid )
|
||||
for (q=proc->handler_list; q; q=q->next) {
|
||||
if ( !q->frozen && !q->ready )
|
||||
count++;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
/* remove the given process from the queue */
|
||||
/* FIXME: We should do this on demand from rungpg.c */
|
||||
/* only to be called with a locked proc_queue */
|
||||
static void
|
||||
remove_process ( int pid )
|
||||
set_process_ready ( struct proc_s *proc )
|
||||
{
|
||||
struct wait_item_s *q;
|
||||
struct wait_item_s *q, *q2;
|
||||
int i;
|
||||
|
||||
for (i=0; i < fd_table_size; i++ ) {
|
||||
if (fd_table[i].fd != -1 && (q=fd_table[i].opaque) && q->pid == pid ) {
|
||||
xfree (q);
|
||||
fd_table[i].opaque = NULL;
|
||||
fd_table[i].fd = -1;
|
||||
assert (proc);
|
||||
DEBUG2 ("set_process_ready(%p) pid=%d", proc, proc->pid );
|
||||
LOCK (fd_table_lock);
|
||||
for (q = proc->handler_list; q; q=q2) {
|
||||
q2 = q->next;
|
||||
for (i=0; i < fd_table_size; i++ ) {
|
||||
if (fd_table[i].fd != -1 && q == fd_table[i].opaque ) {
|
||||
fd_table[i].opaque = NULL;
|
||||
fd_table[i].fd = -1;
|
||||
}
|
||||
}
|
||||
xfree (q);
|
||||
}
|
||||
UNLOCK (fd_table_lock);
|
||||
proc->handler_list = NULL;
|
||||
proc->ready = 1;
|
||||
}
|
||||
|
||||
void
|
||||
_gpgme_remove_proc_from_wait_queue ( int pid )
|
||||
{
|
||||
struct proc_s *proc, *last;
|
||||
|
||||
DEBUG1 ("removing process %d", pid );
|
||||
LOCK (proc_queue_lock);
|
||||
for (last=NULL, proc=proc_queue; proc; last = proc, proc = proc->next ) {
|
||||
if (proc->pid == pid ) {
|
||||
set_process_ready (proc);
|
||||
if (!last)
|
||||
proc_queue = proc->next;
|
||||
else
|
||||
last->next = proc->next;
|
||||
xfree (proc);
|
||||
break;
|
||||
}
|
||||
}
|
||||
UNLOCK (proc_queue_lock);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
@ -134,28 +154,31 @@ gpgme_wait ( GpgmeCtx c, int hang )
|
||||
GpgmeCtx
|
||||
_gpgme_wait_on_condition ( GpgmeCtx c, int hang, volatile int *cond )
|
||||
{
|
||||
struct wait_item_s *q;
|
||||
|
||||
DEBUG3 ("waiting... ctx=%p hang=%d cond=%p", c, hang, cond );
|
||||
do {
|
||||
int did_work = do_select();
|
||||
int any = 0;
|
||||
struct proc_s *proc;
|
||||
|
||||
if ( cond && *cond )
|
||||
hang = 0;
|
||||
|
||||
if ( !did_work ) {
|
||||
/* We did no read/write - see whether the process is still
|
||||
* alive */
|
||||
assert (c); /* !c is not yet implemented */
|
||||
q = queue_item_from_context ( c );
|
||||
if (q) {
|
||||
if ( !count_active_and_thawed_fds (q->pid) ) {
|
||||
remove_process (q->pid);
|
||||
hang = 0;
|
||||
else {
|
||||
LOCK (proc_queue_lock);
|
||||
for (proc=proc_queue; proc; proc = proc->next ) {
|
||||
if ( !proc->ready && !count_running_fds (proc) ) {
|
||||
set_process_ready (proc);
|
||||
}
|
||||
if (c && proc->ready && proc->ctx == c)
|
||||
hang = 0;
|
||||
if ( !proc->ready )
|
||||
any = 1;
|
||||
}
|
||||
else
|
||||
UNLOCK (proc_queue_lock);
|
||||
if (!any)
|
||||
hang = 0;
|
||||
}
|
||||
/* fixme: we should check here for hanging processes */
|
||||
|
||||
if (hang)
|
||||
run_idle ();
|
||||
} while (hang && !c->cancel );
|
||||
@ -177,7 +200,6 @@ _gpgme_wait_on_condition ( GpgmeCtx c, int hang, volatile int *cond )
|
||||
static int
|
||||
do_select ( void )
|
||||
{
|
||||
struct wait_item_s *q;
|
||||
int i, n;
|
||||
int any=0;
|
||||
|
||||
@ -188,18 +210,27 @@ do_select ( void )
|
||||
for (i=0; i < fd_table_size && n; i++ ) {
|
||||
if ( fd_table[i].fd != -1 && fd_table[i].signaled
|
||||
&& !fd_table[i].frozen ) {
|
||||
q = fd_table[i].opaque;
|
||||
struct wait_item_s *q;
|
||||
|
||||
assert (n);
|
||||
n--;
|
||||
if ( q->active )
|
||||
any = 1;
|
||||
if ( q->active && q->handler (q->handler_value,
|
||||
q->pid, fd_table[i].fd ) ) {
|
||||
DEBUG1 ("setting fd %d inactive", fd_table[i].fd );
|
||||
q->active = 0;
|
||||
|
||||
q = fd_table[i].opaque;
|
||||
assert ( q );
|
||||
assert ( q->proc );
|
||||
assert ( !q->ready );
|
||||
any = 1;
|
||||
if ( q->handler (q->handler_value,
|
||||
q->proc->pid, fd_table[i].fd ) ) {
|
||||
DEBUG2 ("setting fd %d (q=%p) ready", fd_table[i].fd, q );
|
||||
q->ready = 1;
|
||||
/* free the table entry*/
|
||||
LOCK (fd_table_lock);
|
||||
fd_table[i].for_read = 0;
|
||||
fd_table[i].for_write = 0;
|
||||
fd_table[i].fd = -1;
|
||||
fd_table[i].opaque = NULL;
|
||||
UNLOCK (fd_table_lock);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -220,22 +251,42 @@ _gpgme_register_pipe_handler ( void *opaque,
|
||||
{
|
||||
GpgmeCtx ctx = opaque;
|
||||
struct wait_item_s *q;
|
||||
struct proc_s *proc;
|
||||
int i;
|
||||
|
||||
assert (opaque);
|
||||
assert (handler);
|
||||
|
||||
/* Allocate a structure to hold info about the handler */
|
||||
q = xtrycalloc ( 1, sizeof *q );
|
||||
if ( !q )
|
||||
return mk_error (Out_Of_Core);
|
||||
q->inbound = inbound;
|
||||
q->handler = handler;
|
||||
q->handler_value = handler_value;
|
||||
q->pid = pid;
|
||||
q->ctx = ctx;
|
||||
q->active = 1;
|
||||
|
||||
lock_table ();
|
||||
/* Put this into the process queue */
|
||||
LOCK (proc_queue_lock);
|
||||
for (proc=proc_queue; proc && proc->pid != pid; proc = proc->next)
|
||||
;
|
||||
if (!proc) { /* a new process */
|
||||
proc = xtrycalloc ( 1, sizeof *proc );
|
||||
if (!proc) {
|
||||
UNLOCK (proc_queue_lock);
|
||||
return mk_error (Out_Of_Core);
|
||||
}
|
||||
proc->pid = pid;
|
||||
proc->ctx = ctx;
|
||||
proc->next = proc_queue;
|
||||
proc_queue = proc;
|
||||
}
|
||||
assert (proc->ctx == ctx);
|
||||
q->proc = proc;
|
||||
q->next = proc->handler_list;
|
||||
proc->handler_list = q;
|
||||
UNLOCK (proc_queue_lock);
|
||||
|
||||
LOCK (fd_table_lock);
|
||||
again:
|
||||
for (i=0; i < fd_table_size; i++ ) {
|
||||
if ( fd_table[i].fd == -1 ) {
|
||||
@ -245,7 +296,7 @@ _gpgme_register_pipe_handler ( void *opaque,
|
||||
fd_table[i].signaled = 0;
|
||||
fd_table[i].frozen = 0;
|
||||
fd_table[i].opaque = q;
|
||||
unlock_table ();
|
||||
UNLOCK (fd_table_lock);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
@ -264,8 +315,9 @@ _gpgme_register_pipe_handler ( void *opaque,
|
||||
}
|
||||
}
|
||||
|
||||
unlock_table ();
|
||||
UNLOCK (fd_table_lock);
|
||||
xfree (q);
|
||||
/* FIXME: remove the proc table entry */
|
||||
return mk_error (Too_Many_Procs);
|
||||
}
|
||||
|
||||
@ -275,15 +327,19 @@ _gpgme_freeze_fd ( int fd )
|
||||
{
|
||||
int i;
|
||||
|
||||
lock_table ();
|
||||
LOCK (fd_table_lock);
|
||||
for (i=0; i < fd_table_size; i++ ) {
|
||||
if ( fd_table[i].fd == fd ) {
|
||||
struct wait_item_s *q;
|
||||
|
||||
fd_table[i].frozen = 1;
|
||||
DEBUG1 ("fd %d frozen", fd );
|
||||
if ( (q=fd_table[i].opaque) )
|
||||
q->frozen = 1;
|
||||
DEBUG2 ("fd %d frozen (q=%p)", fd, q );
|
||||
break;
|
||||
}
|
||||
}
|
||||
unlock_table ();
|
||||
UNLOCK (fd_table_lock);
|
||||
}
|
||||
|
||||
void
|
||||
@ -291,15 +347,19 @@ _gpgme_thaw_fd ( int fd )
|
||||
{
|
||||
int i;
|
||||
|
||||
lock_table ();
|
||||
LOCK (fd_table_lock);
|
||||
for (i=0; i < fd_table_size; i++ ) {
|
||||
if ( fd_table[i].fd == fd ) {
|
||||
struct wait_item_s *q;
|
||||
|
||||
fd_table[i].frozen = 0;
|
||||
DEBUG1 ("fd %d thawed", fd );
|
||||
if ( (q=fd_table[i].opaque) )
|
||||
q->frozen = 0;
|
||||
DEBUG2 ("fd %d thawed (q=%p)", fd, q );
|
||||
break;
|
||||
}
|
||||
}
|
||||
unlock_table ();
|
||||
UNLOCK (fd_table_lock);
|
||||
}
|
||||
|
||||
|
||||
|
@ -23,17 +23,14 @@
|
||||
|
||||
#include "gpgme.h"
|
||||
|
||||
#define SIZEOF_WAIT_QUEUE 10
|
||||
void _gpgme_remove_proc_from_wait_queue ( int pid );
|
||||
|
||||
|
||||
GpgmeError _gpgme_register_pipe_handler(
|
||||
GpgmeError _gpgme_register_pipe_handler (
|
||||
void *opaque,
|
||||
int (*handler)(void*,int,int),
|
||||
void *handler_value,
|
||||
int pid, int fd, int inbound );
|
||||
|
||||
|
||||
|
||||
#endif /* WAIT_H */
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user